Sand-drier.



T. SMITH.

SAND DRIER. APPLICATION FILED JUNBa, 1912.

Patented Oct. 15, 1912.

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4and a heat deiector; and

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TEEZQMAS SMEITL'L 0i? EQRTSMOUTH, YRGINIA.

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. Other objects, as well as the nature, char acteristic features,and'scope of the invention will more readily be understood from theollowingdescription taken in connection with theI accompanying drawing,forma part hereof, wherein,

lFigure 1, is a central vertical section of a sand drier embodying'myinvention. Figs.

2v and 3, are sectional details, the one showing the cleaning doors, andthe other showing the angle irons or distance pieces which sustain'theouter wall of the sand basket.

Referring to the drawing, a, represents a suitable heater; b, representsa superstructure linvolving a wet sand basket or holder c, 'represents astack. The heater 4or furnace a, is equipped with a suitable grate 1, anash pit 2, and with fuel and ash doors 3, and li. That part of thefurnace casing forming the hot air chamber' is somewhat ilaring and hasmounted upon 'it aring or annulus 5, that supports in turn the heatdeiiector, sand/basket or holder, and outer shell or casing di Saidshell or casing 6, is an imperforate member and is equipped nearAitsba'se with \verti cally sliding doors 7; which aiiord ready accessfor'cleaning purposes, and. at its top witha door 8, through whichthe'wety sand is introduced. A cable 9. made fastto' door 8, and runningover pulleys 10, aiiords a convenient means of raising andflowgeringsaid door. l rllhe basket or holder i'or the wet sand is constituted oftwo screens 11, and 12, whereof the outer screen 12, is supported by lbridges 13, on the ring 5,`and by angle irons let, which constitutedistance pieces for holding 'the screen and shell apart, and u.torni apassage 15, intermediate the two for hot air, which eventually finds itsway into` the stack through orifices 18. This is mani- Specification ofLetters Patent.

.applicati-cn 126.' June S, B952; Serial No. 701,345.

sand driers ofl Patented Oct. 15,1912.

iestly advantageous, in that the wet sand is kept out of contact withthe shell, thus prolonging the life of the latter, and, also, in

that a quicker drying is e'ected through the greatly increased dryingarea. The inner or bottom screen 11, extends from the ring or' annulus5, to a sleeve 17, which telescopes the stack. The stack is providedwith a bolt or pin 18, and the sleeve 17, has a slot 18', so that in theevent of repairs the sleeve may-be elevated and maintained in raisedposition by causing the bolt 18, to engage the slot 18. .The stack issustained by a guide 19, and its downward movement is limited by acollar 20.

The described arrangement of the inner wall or screen of the basketprovides an damper 26, that can be operated from the outside by a damperrod 27. Below the de-'ff' lector and the flues or passages 25, is a sandcatcher'or receptacle 28, supported as at 29, and provided with adischarge chute 80, leading out of the furnace.

It will be obvious to those skilled` in the artto which the inventionrelates that nrodications may be made in details without .axial flue orpassage 21, that connects the I departing Jfrom the spirit and scope dfthe invention. Hence the same is not limited other than required by theprior state of the' art.

Having described the nature andl'objects of the invention, what I claimand desire to secure by Letters Patent is 1. rlhe combination of aheater, its stack,

a sand basket, having an axial space or passage connecting the heaterand stack,

, and a shell or casing inclosing the basket and forming a surroundinghot air passage. 2. The combination of a heater, its stack, a perforatesand baskethaving .an Aaxial space or passage that connects the heaterand stack, and an imperforate shell or casing inclosing the basket andforming therewith a 'surrounding hot air passage: 3. The combination ofa heater, its stack, a perforate sand basket having an axial'

